fix deprecation warning in test for FutureExt::deadline() (#651)

* silence deprecation warnings for deadline in tests
* add new integration test for timeout

tests/timer.rs

@@ -80,6 +80,7 @@ fn deadline() {
     let when = Instant::now() + Duration::from_millis(20);
     let (tx, rx) = mpsc::channel();
 
+    #[allow(deprecated)]
     tokio::run({
         future::empty::<(), ()>()
             .deadline(when)
@@ -92,3 +93,24 @@ fn deadline() {
 
     rx.recv().unwrap();
 }
+
+#[test]
+fn timeout() {
+    use futures::future;
+
+    let _ = env_logger::try_init();
+
+    let (tx, rx) = mpsc::channel();
+
+    tokio::run({
+        future::empty::<(), ()>()
+            .timeout(Duration::from_millis(20))
+            .then(move |res| {
+                assert!(res.is_err());
+                tx.send(()).unwrap();
+                Ok(())
+            })
+    });
+
+    rx.recv().unwrap();
+}

tokio-timer/tests/deadline.rs

@@ -1,3 +1,4 @@
+#![allow(deprecated)]
 extern crate futures;
 extern crate tokio_executor;
 extern crate tokio_timer;